Improvement in planing-machines



UNITED STATES PATENT OFFICE.

SYLVANUS J. TALBOTT, OF MILFOBD, NEW HAMPSHIRE.

IMPROVEMENT IN PLANINlG-IVIACHINES.

Specification forming part of Letters Patent No. 54,441, dated May 1, 1866.

To all 'whom it may concern.- f

Be it known that I, S. J TALBOTT, of Milford, in the county of Hillsborough and State of New Hampshire, have invented a new and useful Improvement in Board-Matching Machines; and I do hereby declare that the fol- Fig. 2. Fig. 4 is an end view of aboard matched by my improved machine.

Similar letters of reference indicate like parts.

My invention has for its object to furnish a I machine by means of which the groove and tongue in matching boards may both be cut at the same time and by the same machine 5 and it consists, first, in a sliding cutter-frame, a swinging frame, and a connecting-bar, in combination with each other and with a boardmatching machine; and, second, in the combination,with aboard-matching machine, of a set of feed-rollers and the pulleys and gear-wheels by which they are connected and operated, as hereinafter more fully described.

A is a cast-iron table, which supports the various parts of the machine. Upon this table A is erected au upright table, B, which serves as a support and guide to the board while being operated upon, and which has a part cut away to allow space for the movable or sliding cutter-frame, as seen in Figs. l and 2.

C is the driving-shaft, which is hung beneath the table A in suitable supports D, and which receives motion from the power by means of a band passing over a pulley, L, on said shaft C. Upon the end of the shaft Gis placed a double pulley, E, around which passes two bands, F and G. The bandF passes around the pulley H, attached to the lower cutter-shaft, I, and communicates motion to said shaft. This shaft I revolves in bearings beneath the table A, and carries the cutter-block J, to which the cutters K are attached. These cutters K pass up through an opening or slot in the table A a sufficient distance to form the groove or tongue in the edge of the boards. The band G passes from the pulley E around the large pulley M, which is attached to the shaft N.

Ois a small gear-wheel attached to the shaft N, and revolving with it. This wheel meshes into alarge gear-wheel, P, which works freely upon the shaft I. The small gear R is securely attached to the gear-wheel P, and they revolve loosely upon the said shaft I. The gear-wheel Y R meshes into and impartsA motion to the large gear-wheel S, which revolves loosely upon the shaft N.

The double pulley T is firmly attached to the gear-wheel S, and revolves with it loosely upon the said shaft N.

The bands U and -V pass over the double pulleys T and over the pulleys W and X upon the feed-shafts Y and Z, and impart motion to the feed-rollers A and B upon said shafts. These rollers pass up through openings in the table A, as shown invFigs. l and 2, and carry the boards forward as they are operated upon by the cutters.

It will be observed that while the cutters revolve very rapidly the motion is slowed by the gearing O P B S, so that the boards are fed forward to the cutters at the proper rate to enable them to complete their work. If the boards to be matched were all of the 'same quality, this arrangement would be suficient;

C is a bent lever, pivoted to the edge of the table A. Upon an arm at one end of the said lever revolves a pulley, D. The other end of the lever C comes in contact with the rack E, by the teeth of which the lever is held in any positionin which it may be placed. By moving the lever in one direction along the rack E the 'pulley D is pressed down upon they belt G, tightening it, thus imparting a more rapid motion to the feed-rollers A and B. By moving the lever in the other direction the belt G is slackened and the feed apparatus operated more slowly, thus enabling the operator to vary the rapidity of feed as required.

To the upper surface of the table A is piv'- oted the lower end of the swinging frame F. In the upper part of this frame revolves a shaft,

G', which carries two pulleys, H' and I'. This shaft receives motion from the driving-shaft G by means of the band J', which passes around a pulley on said shaft (3 and around the pulley H' of the shaft G'. The band K' passes around the pulley l' on the shaft-'G' and the pulley L' on the upper cutter-shaft, M', and communicates motion to said cutter-shaft. The

shaft M' also carries the cutter-block N' and the cutters O'.

The sliding frame P' and the swinging frame F' are kept at the same distance apart, so as to keep the-belt K' always taut by the inflexible connecting-bar R', which is pivoted to the said frames, as represented in Fig. 1.

S' are grooved guides, in which the sliding frame P' slides vertically to adapt itself "to the various widths of the boards to be operated upon. T' is agage attached to the frame P', by means of which the depth of the cut is regulated.

combination with each other and with a boardu matching machine, substantially as and for the purpose set forth.

sYLvANUs mrnnorr.

Witnesses BAINBRIDGE WADLEIGFH,Y THos. L. LIVERMORE; 

